WO2014104759A1 - Matériau actif de cathode pour batteries secondaires au lithium - Google Patents

Matériau actif de cathode pour batteries secondaires au lithium Download PDF

Info

Publication number
WO2014104759A1
WO2014104759A1 PCT/KR2013/012213 KR2013012213W WO2014104759A1 WO 2014104759 A1 WO2014104759 A1 WO 2014104759A1 KR 2013012213 W KR2013012213 W KR 2013012213W WO 2014104759 A1 WO2014104759 A1 WO 2014104759A1
Authority
WO
WIPO (PCT)
Prior art keywords
active material
lithium secondary
particles
concentration
cathode active
Prior art date
Application number
PCT/KR2013/012213
Other languages
English (en)
Korean (ko)
Inventor
선양국
노형주
윤성준
Original Assignee
한양대학교 산학협력단
주식회사 에너세라믹
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=51735003&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2014104759(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 한양대학교 산학협력단, 주식회사 에너세라믹 filed Critical 한양대학교 산학협력단
Priority to US14/652,684 priority Critical patent/US20150340686A1/en
Priority to EP13868086.3A priority patent/EP2940761B1/fr
Priority to CN201380067749.1A priority patent/CN105009333B/zh
Publication of WO2014104759A1 publication Critical patent/WO2014104759A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/364—Composites as mixtures
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00—Compounds of manganese
    • C01G45/12—Manganates manganites or permanganates
    • C01G45/1221—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof
    • C01G45/1228—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof of the type [MnO2]n-, e.g. LiMnO2, Li[MxMn1-x]O2
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00—Compounds of cobalt
    • C01G51/40—Cobaltates
    • C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
    • C01G51/44—Cobaltates containing alkali metals, e.g. LiCoO2 containing manganese
    • C01G51/50—Cobaltates containing alkali metals, e.g. LiCoO2 containing manganese of the type [MnO2]n-, e.g. Li(CoxMn1-x)O2, Li(MyCoxMn1-x-y)O2
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • C01G53/40—Nickelates
    • C01G53/42—Nickelates containing alkali metals, e.g. LiNiO2
    • C01G53/44—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese
    • C01G53/50—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese of the type [MnO2]n-, e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/40—Alloys based on alkali metals
    • H01M4/405—Alloys based on lithium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/53—Particles with a specific particle size distribution bimodal size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/11—Powder tap density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a cathode active material for a lithium secondary battery, and more particularly, to a cathode active material for a lithium secondary battery having improved tap density by mixing cathode active materials having different sizes, wherein at least one particle of the cathode active material to be mixed is particles. It relates to a cathode active material for a lithium secondary battery, characterized by having a concentration gradient within.
  • the porosity of the electrode In the lithium secondary battery, it is necessary to maintain the porosity of the electrode above a certain level in consideration of the ion conductivity of the active material.
  • the porosity of the electrode When the electrode is rolled at a high rolling rate to improve the loading amount or the electrode density, the porosity of the electrode is excessively reduced, causing a sharp decrease in the C-rate.
  • An object of the present invention is to provide a cathode active material for a lithium secondary battery that can exhibit a good C-rate while reducing the porosity in order to solve the problems of the prior art as described above.
  • the present invention in order to solve the above problems, in the positive electrode active material for a lithium secondary battery comprising a mixture of particles P1 having a diameter of D1, particles P2 having a diameter of D2, any one of the particles P1, the particles P2 is represented by the following formula It provides a positive electrode active material for a lithium secondary battery having a central portion represented by 1 and the surface portion represented by the following formula (2).
  • M1, M2 and M3 are selected from the group consisting of Ni, Co, Mn, and combinations thereof
  • M4 is Fe, Na, Mg, Ca, Ti, V, Cr, Cu, Zn, Ge , Sr, Ag, Ba, Zr, Nb, Mo, Al, Ga, B and combinations thereof, 0 ⁇ a1 ⁇ 1.1, 0 ⁇ a2 ⁇ 1.1, 0 ⁇ x1 ⁇ 1, 0 ⁇ x2 ⁇ 1, 0 ⁇ y1 ⁇ 1, 0 ⁇ y2 ⁇ 1, 0 ⁇ z1 ⁇ 1, 0 ⁇ z2 ⁇ 1, 0 ⁇ w ⁇ 0.1, 0.0 ⁇ 0.02, 0 ⁇ x1 + y1 + z1 ⁇ 1, 0 ⁇ x2 + y2 + z2 ⁇ 1, x1 ⁇ x2, y1 ⁇ y2, z2 ⁇ z1.)
  • the present invention consists of a mixture of particles of positive electrode active material having different sizes, which is composed of a mixture of particles having a constant concentration of metal ions in the particles and particles having different compositions in the center and surface portions in the particles, or in the particles in the center and surfaces. It relates to a positive electrode active material composed of a mixture of particles having a different composition.
  • a positive electrode active material composed of a mixture of particles having a different composition.
  • the particle P1 has a central portion represented by the formula (1) and a surface portion represented by the formula (2), the diameter D1 of P1 and the diameter D2 of P2 are 2 to 20 ⁇ m, satisfying the relationship of D1 ⁇ D2
  • the particles P1 may be included in a ratio of 5 to 95 parts by weight based on 100 parts by weight of the total positive electrode active material.
  • the particle having a large particle size and a constant metal concentration is filled. While the high power characteristics as a whole, the particle size is small, the composition of the thermal stability is improved by the particles having different compositions of the central portion and the surface portion.
  • the particle size is small and the particles having different compositions in the central portion and the surface portion are filled in the space between the particles having a large size and the composition in the central portion and the surface portion, high thermal stability and high capacity can be exhibited.
  • the particle P1 has a central portion represented by the formula (1) and a surface portion represented by the formula (2), the diameter D1 of P1 and the diameter D2 of P2 are 2 to 20 ⁇ m, and the relationship of D2 ⁇ D1
  • the particle P1 may be included in a ratio of 5 to 95 parts by weight based on 100 parts by weight of the total positive electrode active material.
  • a structure in which particles having a small particle size and a constant metal concentration are filled in a space between particles having a large particle size and a different composition of the central portion and the surface portion While the thermal stability is improved by the particles as a whole, the particles having a small size and a constant metal concentration can exhibit high output characteristics.
  • the positive electrode active material for the lithium secondary battery having different compositions of the center portion and the surface portion is not limited to the internal structure as long as the composition of the center portion and the surface portion is different. That is, the concentration of the metal constituting the positive electrode active material can form a continuous concentration gradient in the entire region from the center of the particle to the surface portion, or form a core-shell structure, a certain core, depending on the thickness of the central portion and the surface portion. Concentration gradients can then be formed only in the shell part.
  • the thickness of the central portion is 10 to 70% of the total size of the cathode active material particles for lithium secondary battery,
  • the concentration of the metal ions from the central portion to the surface portion is represented by the formula (2), that is, characterized in that the core and shell structure having a constant concentration.
  • the central portion occupies 10 to 70% of the distance from the center of the particle to the outermost surface, and 90 to 30% of the distance.
  • the surface portion occupies. If the ratio of the center portion is 70% or more of the distance from the center of the aperture to the outermost surface, the surface portion is too thin to cover the surface of the uneven aperture, and the ratio of the center portion of the aperture is the center of the aperture. If it is 10% or less of the distance from the outermost surface to the outermost surface, the charge / discharge capacity of the center portion may be lowered and the capacity accompanying the cycle may be lowered.
  • the thickness of the central portion is 10 to 70% of the total size of the cathode active material particles for lithium secondary battery,
  • the thickness of the surface portion is 1 to 5% of the total size of the cathode active material particles for lithium secondary battery
  • the concentration of M1, M2, and M3 have a continuous concentration gradient from the central portion to the surface portion.
  • the central portion and the thickness of the surface portion is 1 to 5% of the total size of the cathode active material particles for lithium secondary battery
  • the concentration of M1, M2, and M3 have a continuous concentration gradient from the central portion to the surface portion.
  • the cathode active material for a lithium secondary battery having a central portion represented by Chemical Formula 1 and a surface portion represented by Chemical Formula 2 of the present invention increases the concentration of M1 and M2 with a continuous concentration gradient from the central portion to the surface portion,
  • the concentration of M3 is characterized in that it decreases with a continuous concentration gradient toward the surface portion from the central portion.
  • the concentrations of M1 and M2 are continuous from the center portion to the surface portion.
  • the concentration increases with a concentration gradient, and the concentration of M3 decreases with a continuous concentration gradient from the center to the surface portion.
  • the concentration distribution means that there is a difference of 0.05 to 15 mol%, preferably 0.05 to 10 mol%, more preferably 0.05 to 5 mol%, of a change in metal concentration per 0.1 ⁇ m from the center of the particle to the surface portion.
  • one or more concentration gradient slopes may be included throughout the particles, specifically, the concentration of the metal in the entire region from the particle center to the surface may be particles having one continuous concentration gradient slope, or particles The concentration of metal in the region from the center to the surface may be particles having two or more different concentration gradient gradients.
  • the central portion and the thickness of the surface portion is 1 to 5% of the total size of the cathode active material particles for lithium secondary battery
  • the concentration of M1 is constant from the central portion to the surface portion
  • the concentration of M2 and the concentration of M3 toward the surface portion from the central portion is characterized by having a continuous concentration gradient.
  • M1 is Co
  • M2 is Mn
  • M3 is characterized in that Ni.
  • M1 is Mn
  • M2 is Co
  • M3 is characterized in that Ni.
  • M1 is Ni
  • M2 is Co
  • M3 is characterized in that Mn.
  • the present invention also provides an electrode including the cathode active material, a lithium secondary battery comprising the electrode.
  • the cathode active material according to the present invention not only enhances the C-rate characteristics by mixing particles having different sizes, but also includes particles having a gradient of metal ions in the particles to be mixed, and also has appropriate porosity. By maintaining the positive electrode active material can be produced significantly improved tap density.
  • Figure 1 shows the results of measuring the PSA according to the ratio of the particles mixed in the positive electrode active material according to an embodiment of the present invention.
  • Figure 2 shows the tap density according to the proportion of the particles mixed in the positive electrode active material according to an embodiment of the present invention.
  • 3 and 4 show the results of measuring the PSA of the positive electrode active material according to an embodiment of the present invention.
  • an aqueous metal salt solution having a concentration of 2.0 M in which nickel sulfate, cobalt sulfate, and manganese sulfate is mixed in a molar ratio of 90: 5: 5 is used as an aqueous metal salt solution for forming a core.
  • the metal salt aqueous solution for forming a core was first introduced into a reactor. Then, the mixture was mixed while gradually changing the mixing ratio of the aqueous metal salt solution for forming the center portion and the aqueous metal salt solution for forming the surface portion, and charged at a rate of 0.3 liters / hour. In addition, a 4.0 M concentration of ammonia solution was continuously added to the reactor at 0.03 liter / hour.
  • a 4.0 M sodium hydroxide aqueous solution was supplied for pH adjustment to maintain pH at 10. Impeller speed was adjusted to 1000 rpm. The flow rate was adjusted so that the average residence time of the solution in the reactor was about 6 hours. After the reaction reached a steady state, a solution containing a cathode active material precursor for a lithium secondary battery was continuously obtained through an overflow pipe.
  • the solution containing the obtained cathode active material precursor for lithium secondary batteries was filtered, washed with water, and dried in a 110 ° C. warm air dryer for 15 hours to prepare a cathode active material precursor for lithium secondary batteries.
  • cathode active material precursor for lithium secondary batteries After mixing the prepared cathode active material precursor for lithium secondary batteries and lithium hydroxide (LiOH) in a molar ratio of 1.0: 1.19, and heated at a temperature increase rate of 2 °C / min, and maintained at 280 °C for 5 hours, preliminary baking was performed, Subsequently, the resultant was calcined at 900 ° C. for 10 hours to obtain a cathode active material for a lithium secondary battery having a particle size of 4 to 7 ⁇ m and a tap density of 1.97 g / cc, and a particle size of 10 to 14 ⁇ m and a tap density of 2.42 g / cc. Each of the measured cathode active materials for lithium secondary batteries was prepared.
  • a cathode active material in which the concentration of Mn is fixed at 25% and the concentration of Co and Ni is gradient, 2.0, in which nickel sulfate, cobalt sulfate, and manganese sulfate were mixed in a molar ratio of 75:00:25 as an aqueous metal salt solution for forming a core.
  • the metal salt for forming the center portion was first introduced into the reactor, except that the mixing rate of the metal salt aqueous solution for forming the center portion and the metal salt aqueous solution for forming the surface portion was gradually mixed and added at a rate of 0.3 liters / hour.
  • the concentration of Mn is fixed at 25% and the concentration of Co and Ni is gradient as in 1, and the particle size is 4 to 6 ⁇ m and the tap density is 2.03 g / cc.
  • a cathode active material having two or more concentration gradients of Mn, Co, and Ni 2.0 M concentration of nickel sulfate, cobalt sulfate, and manganese sulfate was mixed in a molar ratio of 80:05:15 as a metal salt aqueous solution for forming a core.
  • An aqueous solution was prepared, and as an aqueous metal salt solution for forming the first surface portion, a 2.0 M metal solution in which nickel sulfate, cobalt sulfate, and manganese sulfate was mixed in a molar ratio of 70:10:20 was prepared, and the metal salt for forming the second surface portion was prepared.
  • the aqueous metal salt solution for forming the core was first introduced into a reactor, and the core for forming the core was added thereto. After mixing at a constant rate while gradually changing the mixing ratio of the aqueous metal salt solution and the aqueous metal salt solution for forming the first surface portion, the first surface portion was introduced at a rate of 0.3 liters / hour.
  • the size of the concentration gradient was the same as in Preparation Example 1, except that the mixing ratio of the aqueous metal salt aqueous solution and the aqueous metal salt aqueous solution for forming the second surface portion was gradually mixed and fed at a rate of 0.3 liter / hour.
  • Cathode active material for lithium secondary batteries having a particle size of 6 ⁇ m and a tap density of 2.17 g / cc, and a cathode active material for lithium secondary batteries having a particle size of 10 to 14 ⁇ m and a tap density of 2.52 g / cc was prepared.
  • a metal solution for forming a core having a concentration of 2.0 M in which nickel sulfate, cobalt sulfate, and manganese sulfate was mixed at a molar ratio of 95:00:05 was prepared, and for shell formation
  • a metal aqueous solution having a concentration of 2.0 M in which nickel sulfate, cobalt sulfate, and manganese sulfate was mixed in a molar ratio of 40:20:40 was prepared, and then the aqueous metal salt solution for forming a core was first introduced into a reactor to form a core.
  • an active material having a particle size of 4 to 6 ⁇ m and a tap density of 1.67 g / cc of particles consisting of a core having a constant concentration and a constant shell concentration Prepared.
  • a metal solution for forming a core having a concentration of 2.0 M in which nickel sulfate, cobalt sulfate, and manganese sulfate was mixed in a molar ratio of 80:05:15 was prepared, and a shell was formed.
  • an aqueous metal salt solution for preparing a 2.0 M metal solution in which nickel sulfate, cobalt sulfate and manganese sulfate were mixed in a molar ratio of 35:20:45 the aqueous metal salt solution for core formation was first introduced into a reactor to form a core.
  • the mixing ratio of the aqueous metal salt solution for core formation and the aqueous metal salt solution for shell formation is gradually mixed, mixed at a constant ratio, and introduced at a rate of 0.3 liters / hour to have particle sizes of 4 to 6 ⁇ m and a tap density of 1.73.
  • Positive electrode active material for lithium secondary batteries measured in g / cc
  • positive electrode active material for lithium secondary batteries measured in particle size of 11 to 14 ⁇ m and tap density of 2.28 g / cc It was produced quality.
  • the particles were prepared using a 2.0 M aqueous metal solution in which nickel sulfate, cobalt sulfate, and manganese sulfate were mixed at a 60:20:20 molar ratio.
  • An active material having a size of 5 ⁇ m and a tap density of particles of 1.67 g / cc was prepared.
  • NCA particles were prepared having a particle size of 3 ⁇ m and constant concentrations of nickel, cobalt and aluminum in the particle.
  • LCO particles having a particle size of 2 ⁇ m and a constant cobalt ion concentration were prepared.
  • the particles prepared in Preparation Example 5 were mixed with the particles including the shell having a constant core and concentration gradient and the particles prepared in Preparation Examples 1 to 8 as follows, and each tap density, electrode density, and C-rate were mixed.
  • the measurement results are shown in Table 1 below.
  • the particles having a concentration gradient of the total metal and the particles prepared in Preparation Examples 1 to 8 were mixed as follows and the respective tap density, electrode density, and C-rate were measured. The results are shown in Table 2 below.
  • Example 7 the mixing ratio of the active material of Preparation Example 1 having a particle size of 11 ⁇ m and the LCO particles of Preparation Example 8 having a particle size of 2 ⁇ m was mixed as in Table 3 below, and each mixing Particle size analysis (PSA) results and tap densities according to ratios are shown in FIGS. 1 to 2 and Table 3.
  • PSA Particle size analysis
  • the active material having a concentration gradient prepared in Preparation Example 1 having a particle size of 6 ⁇ m and the active material particles having a concentration gradient prepared in Preparation Example 1 having a particle size of 14 ⁇ m as in Example 10 were mixed and mixed. Post particle size analysis and change in tap density were measured and shown in FIG. 3.
  • the active material having a concentration gradient prepared in Preparation Example 1 having a particle size of 6 ⁇ m and the active material particles having a concentration gradient prepared in Preparation Example 2 having a particle size of 12 ⁇ m as in Example 16 were mixed and mixed. After the particle size analysis and the change in the tap density is measured and shown in Figure 4
  • the particles having a concentration gradient of two or more concentrations of Mn, Ni, and Co and the particles prepared in Preparation Examples 1 to 8 were mixed as follows, and the respective tap density, electrode density, And C-rate was measured and the results are shown in Table 5 below.
  • the positive electrode active material according to the present invention not only enhances the C-rate property but also maintains proper porosity by mixing particles having different sizes and including particles having a gradient of metal ions in the mixed particles. It is possible to prepare a positive electrode active material having a significantly improved density.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

La présente invention concerne un matériau actif de cathode pour batteries secondaires au lithium et, plus particulièrement, un matériau actif de cathode pour batteries secondaires au lithium ayant une masse volumique tassée améliorée par mélange de matériaux actifs de cathode ayant différentes tailles l'un par rapport à l'autre comprenant des particules qui ont des densités en gradient en leur sein.
PCT/KR2013/012213 2012-12-26 2013-12-26 Matériau actif de cathode pour batteries secondaires au lithium WO2014104759A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US14/652,684 US20150340686A1 (en) 2012-12-26 2013-12-26 Cathode active material for lithium secondary battery
EP13868086.3A EP2940761B1 (fr) 2012-12-26 2013-12-26 Matériau actif de cathode pour batteries secondaires au lithium
CN201380067749.1A CN105009333B (zh) 2012-12-26 2013-12-26 用于锂二次电池的正极活性材料

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20120153025 2012-12-26
KR10-2012-0153025 2012-12-26
KR10-2013-0163942 2013-12-26
KR1020130163942A KR101614991B1 (ko) 2012-12-26 2013-12-26 리튬 이차전지용 양극활물질

Publications (1)

Publication Number Publication Date
WO2014104759A1 true WO2014104759A1 (fr) 2014-07-03

Family

ID=51735003

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/012213 WO2014104759A1 (fr) 2012-12-26 2013-12-26 Matériau actif de cathode pour batteries secondaires au lithium

Country Status (5)

Country Link
US (1) US20150340686A1 (fr)
EP (1) EP2940761B1 (fr)
KR (2) KR101614991B1 (fr)
CN (1) CN105009333B (fr)
WO (1) WO2014104759A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105993090A (zh) * 2014-10-02 2016-10-05 艾可普罗有限公司 锂二次电池用正极活性材料及包含其的锂二次电池
JP2018503238A (ja) * 2014-12-31 2018-02-01 ベイジン イースプリング マテリアル テクノロジー カンパニー リミテッド リチウムイオン電池用の傾斜構造を有する多成分材料、その調製方法、リチウムイオン電池の正極及びリチウムイオン電池
US20180175388A1 (en) * 2016-12-16 2018-06-21 Sk Innovation Co., Ltd. Lithium Secondary Battery
US10756331B2 (en) 2016-11-18 2020-08-25 Sk Innovation Co., Ltd. Lithium secondary battery and method of fabricating the same

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105229830A (zh) * 2013-02-28 2016-01-06 汉阳大学校产学协力团 锂二次电池用正极活性物质
KR102460961B1 (ko) 2015-11-06 2022-10-31 삼성에스디아이 주식회사 리튬이차전지용 양극 활물질, 그 제조방법 및 이를 포함한 양극을 구비한 리튬이차전지
KR102227306B1 (ko) * 2015-11-30 2021-03-15 주식회사 엘지화학 이차전지용 양극 활물질, 이의 제조방법, 및 이를 포함하는 리튬 이차전지
KR102227304B1 (ko) * 2015-11-30 2021-03-15 주식회사 엘지화학 이차전지용 양극 활물질, 이의 제조방법, 및 이를 포함하는 리튬 이차전지
KR102012427B1 (ko) * 2015-11-30 2019-08-21 주식회사 엘지화학 이차전지용 양극활물질, 이를 포함하는 이차전지용 양극 및 이차전지
KR102227305B1 (ko) * 2015-11-30 2021-03-15 주식회사 엘지화학 이차전지용 양극 활물질, 이의 제조방법, 및 이를 포함하는 리튬 이차전지
KR20200091960A (ko) * 2016-02-08 2020-07-31 가부시키가이샤 무라타 세이사쿠쇼 이차 전지용 정극 활물질, 이차 전지용 정극, 이차 전지, 전지 팩, 전동 차량, 전력 저장 시스템, 전동 공구 및 전자 기기
KR102467458B1 (ko) * 2016-11-18 2022-11-14 에스케이온 주식회사 리튬 이차 전지
CN108075178B (zh) * 2016-11-18 2023-04-07 Sk新能源株式会社 锂二次电池及其制造方法
KR102467457B1 (ko) * 2016-11-18 2022-11-14 에스케이온 주식회사 리튬 이차 전지
KR102449152B1 (ko) * 2017-09-19 2022-09-28 에스케이온 주식회사 리튬 이차 전지 및 이의 제조 방법
US10991943B2 (en) * 2016-12-02 2021-04-27 Samsung Sdi Co., Ltd. Nickel active material precursor for lithium secondary battery, method for producing nickel active material precursor, nickel active material for lithium secondary battery produced by method, and lithium secondary battery having cathode containing nickel active material
EP3550644A4 (fr) * 2016-12-05 2019-11-20 Posco Précurseur de matériau actif d'électrode positive et procédé de préparation associé, matériau actif d'électrode positive et procédé de préparation associé, et batterie secondaire au lithium comprenant un matériau actif d'électrode positive
KR102387401B1 (ko) * 2016-12-16 2022-04-14 에스케이온 주식회사 리튬 이차 전지
JP6979460B2 (ja) * 2016-12-22 2021-12-15 ポスコPosco 正極活物質、その製造方法、およびこれを含むリチウム二次電池
EP3439081A4 (fr) * 2017-01-31 2019-08-14 LG Chem, Ltd. Matériau actif de cathode pour batterie secondaire au lithium, comprenant de l'oxyde de lithium et de cobalt ayant une structure c ur-écorce, son procédé de préparation, et cathode et batterie secondaire comprenant un matériau actif de cathode
KR102366066B1 (ko) * 2017-03-21 2022-02-22 에스케이온 주식회사 리튬 이차 전지
KR102306545B1 (ko) * 2017-10-19 2021-09-30 주식회사 엘지에너지솔루션 리튬 이차전지용 양극재, 이의 제조방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지
EP3486220B1 (fr) 2017-11-15 2020-09-30 Ecopro Bm Co., Ltd. Matériau actif de cathode pour batterie secondaire au lithium et batterie secondaire au lithium l'incluant
KR20190055700A (ko) * 2017-11-15 2019-05-23 주식회사 에코프로비엠 리튬이차전지용 양극 활물질 조성물 및 이를 포함하는 리튬 이차전지
KR102331305B1 (ko) * 2017-11-21 2021-11-26 주식회사 엘지에너지솔루션 전극 조립체 및 이를 포함하는 리튬 이차전지
JP7049551B2 (ja) * 2017-11-21 2022-04-07 エルジー エナジー ソリューション リミテッド 二次電池用正極材及びこれを含むリチウム二次電池
EP3696894B1 (fr) 2017-11-21 2023-09-13 LG Energy Solution, Ltd. Matériau de cathode pour accumulateur au lithium, et cathode et accumulateur au lithium le comprenant
KR102185126B1 (ko) * 2017-12-04 2020-12-01 삼성에스디아이 주식회사 리튬이차전지용 양극활물질, 그 제조방법 및 이를 포함하는 양극을 포함한 리튬이차전지
US11777075B2 (en) 2017-12-04 2023-10-03 Samsung Sdi Co., Ltd. Positive active material for rechargeable lithium battery, preparing method thereof and rechargeable lithium battery comprising positive electrode including positive active material
KR102424398B1 (ko) 2020-09-24 2022-07-21 삼성에스디아이 주식회사 리튬 이차 전지용 양극, 그 제조 방법, 및 이를 포함한 리튬 이차 전지
US11670754B2 (en) 2017-12-04 2023-06-06 Samsung Sdi Co., Ltd. Positive active material for rechargeable lithium battery, preparing method thereof and rechargeable lithium battery comprising positive electrode including positive active material
US11522189B2 (en) 2017-12-04 2022-12-06 Samsung Sdi Co., Ltd. Positive electrode for rechargeable lithium battery, preparing method thereof, and rechargeable lithium battery comprising positive electrode
WO2019112279A2 (fr) 2017-12-04 2019-06-13 삼성에스디아이 주식회사 Matériau actif de cathode pour batterie secondaire au lithium, son procédé de fabrication et batterie secondaire au lithium comprenant une cathode comprenant ce matériau actif
KR102559218B1 (ko) 2017-12-07 2023-07-25 에스케이온 주식회사 리튬 이차 전지용 음극 활물질, 이의 제조방법, 및 이를 포함하는 리튬 이차 전지
KR102041578B1 (ko) * 2017-12-08 2019-11-06 주식회사 포스코 리튬 이차 전지용 양극 활물질 및 이를 포함하는 리튬 이차 전지
KR102457285B1 (ko) * 2018-01-15 2022-10-19 에스케이온 주식회사 리튬 이차 전지
KR102571672B1 (ko) * 2018-01-17 2023-08-25 에스케이온 주식회사 리튬 이차 전지
KR102472882B1 (ko) * 2018-01-18 2022-11-30 에스케이온 주식회사 리튬 이차 전지
KR102302038B1 (ko) 2018-05-11 2021-09-15 주식회사 엘지화학 리튬 이차전지용 양극 활물질, 이의 제조방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지
KR102485994B1 (ko) * 2018-06-20 2023-01-05 에스케이온 주식회사 리튬 이차 전지 및 이의 제조 방법
JP2020004508A (ja) * 2018-06-25 2020-01-09 凸版印刷株式会社 アルカリ二次電池用負極組成物及びアルカリ二次電池用負極
KR101964716B1 (ko) 2018-06-26 2019-04-02 에스케이이노베이션 주식회사 리튬 이차 전지용 양극 활물질 및 이를 포함하는 리튬 이차 전지
CN116845196A (zh) 2018-07-06 2023-10-03 Sk新能源株式会社 锂二次电池
KR102306547B1 (ko) 2018-09-14 2021-09-30 주식회사 엘지화학 리튬 이차전지용 양극재의 제조 방법 및 이에 의해 제조된 리튬 이차전지용 양극재
KR102436308B1 (ko) 2018-10-18 2022-08-24 에스케이온 주식회사 리튬 이차 전지
KR102182358B1 (ko) 2018-11-02 2020-11-24 삼성에스디아이 주식회사 리튬 이차 전지용 양극 활물질, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지
CN111146441B (zh) 2018-11-06 2021-05-04 Sk新技术株式会社 用于锂二次电池的正极活性材料及其制造方法
KR102453274B1 (ko) * 2018-12-10 2022-10-11 주식회사 엘지에너지솔루션 리튬이차전지용 양극재, 이를 포함하는 양극 및 리튬이차전지
KR102314085B1 (ko) * 2019-03-05 2021-10-18 삼성에스디아이 주식회사 리튬 이차 전지용 양극 활물질, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지
US11552293B2 (en) 2019-03-05 2023-01-10 Samsung Sdi Co., Ltd. Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same
KR20210006252A (ko) 2019-07-08 2021-01-18 주식회사 엘지화학 리튬 이차전지용 양극 활물질 및 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지
CN110255500A (zh) * 2019-07-25 2019-09-20 海南汉地阳光石油化工有限公司 一种循环氢脱氨提纯系统及方法
CN111370669B (zh) * 2020-03-19 2021-12-28 江苏中奕和创智能科技有限公司 一种动力电池复合正极的制备方法
KR102587970B1 (ko) * 2020-10-06 2023-10-10 주식회사 엘지화학 고함량의 니켈 함유 리튬 복합전이금속 산화물 양극 활물질 입자 혼합물의 제조방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100274892B1 (ko) * 1998-05-13 2001-02-01 김순택 리튬 2차전지
KR20060060609A (ko) * 2004-11-30 2006-06-05 마쯔시다덴기산교 가부시키가이샤 비수전해질 2차전지
KR20060105039A (ko) * 2003-12-31 2006-10-09 주식회사 엘지화학 입도 의존 조성을 갖는 전극 활물질 분말과 그 제조방법
KR20070097923A (ko) * 2006-03-30 2007-10-05 한양대학교 산학협력단 리튬 전지용 양극 활물질, 그 제조 방법 및 그를 포함하는리튬 이차 전지
KR20120118435A (ko) * 2011-04-18 2012-10-26 주식회사 엘지화학 양극 활물질 및 그것을 포함한 리튬 이차전지

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9666862B2 (en) * 2005-02-23 2017-05-30 Lg Chem, Ltd. Secondary battery of improved lithium ion mobility and cell capacity
JP5196844B2 (ja) 2007-05-14 2013-05-15 キヤノン株式会社 プローブセット、プローブ担体及び検査方法
JP5287520B2 (ja) 2008-09-02 2013-09-11 住友化学株式会社 電極活物質、電極および非水電解質二次電池
JP4972624B2 (ja) 2008-09-30 2012-07-11 日立ビークルエナジー株式会社 リチウム二次電池用正極材料及びそれを用いたリチウム二次電池
BRPI1008625A2 (pt) 2009-02-20 2016-03-01 Umicore Nv pó de óxido de metal de lítio para uso como um material de catodo em uma bateria recarregável, uso, e, processo para a fabricação do mesmo.
US8871113B2 (en) 2010-03-31 2014-10-28 Samsung Sdi Co., Ltd. Positive active material, and positive electrode and lithium battery including positive active material
US8911902B2 (en) * 2010-07-06 2014-12-16 Samsung Sdi Co., Ltd. Nickel-based positive electrode active material, method of preparing the same, and lithium battery using the nickel-based positive electrode active material
KR101292756B1 (ko) 2011-01-05 2013-08-02 한양대학교 산학협력단 입자 전체 농도 구배 리튬이차전지용 양극활물질, 이의 제조 방법, 및 이를 포함하는 리튬이차전지
CN103635431B (zh) * 2011-06-17 2016-06-01 尤米科尔公司 用核心材料的元素和一种或多种金属氧化物的混合物涂覆的锂金属氧化物粒子

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100274892B1 (ko) * 1998-05-13 2001-02-01 김순택 리튬 2차전지
KR20060105039A (ko) * 2003-12-31 2006-10-09 주식회사 엘지화학 입도 의존 조성을 갖는 전극 활물질 분말과 그 제조방법
KR20060060609A (ko) * 2004-11-30 2006-06-05 마쯔시다덴기산교 가부시키가이샤 비수전해질 2차전지
KR20070097923A (ko) * 2006-03-30 2007-10-05 한양대학교 산학협력단 리튬 전지용 양극 활물질, 그 제조 방법 및 그를 포함하는리튬 이차 전지
KR20120118435A (ko) * 2011-04-18 2012-10-26 주식회사 엘지화학 양극 활물질 및 그것을 포함한 리튬 이차전지

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105993090A (zh) * 2014-10-02 2016-10-05 艾可普罗有限公司 锂二次电池用正极活性材料及包含其的锂二次电池
US10522823B2 (en) * 2014-10-02 2019-12-31 Ecopro Bm Co., Ltd. Cathode active material for lithium secondary battery and lithium secondary battery comprising the same
JP2020109772A (ja) * 2014-10-02 2020-07-16 エコプロ ビーエム カンパニー リミテッドＥｃｏｐｒｏ Ｂｍ Ｃｏ．， Ｌｔｄ． リチウム二次電池用正極活物質及びこれを含むリチウム二次電池
JP7412258B2 (ja) 2014-10-02 2024-01-12 エコプロ ビーエム カンパニー リミテッド リチウム二次電池用正極活物質及びこれを含むリチウム二次電池
JP2018503238A (ja) * 2014-12-31 2018-02-01 ベイジン イースプリング マテリアル テクノロジー カンパニー リミテッド リチウムイオン電池用の傾斜構造を有する多成分材料、その調製方法、リチウムイオン電池の正極及びリチウムイオン電池
US10756331B2 (en) 2016-11-18 2020-08-25 Sk Innovation Co., Ltd. Lithium secondary battery and method of fabricating the same
US20180175388A1 (en) * 2016-12-16 2018-06-21 Sk Innovation Co., Ltd. Lithium Secondary Battery
US11936041B2 (en) * 2016-12-16 2024-03-19 Sk On Co., Ltd. Lithium secondary battery

Also Published As

Publication number Publication date
EP2940761A1 (fr) 2015-11-04
EP2940761B1 (fr) 2019-12-18
US20150340686A1 (en) 2015-11-26
CN105009333B (zh) 2018-04-17
CN105009333A (zh) 2015-10-28
EP2940761A4 (fr) 2016-08-31
KR101614991B1 (ko) 2016-04-22
KR101812517B1 (ko) 2017-12-28
KR20160049519A (ko) 2016-05-09
KR20140085347A (ko) 2014-07-07

Similar Documents

Publication Publication Date Title
WO2014104759A1 (fr) Matériau actif de cathode pour batteries secondaires au lithium
WO2014178625A1 (fr) Matériau actif d'anode pour batterie secondaire au lithium
WO2014133370A1 (fr) Materiau actif de cathode pour batterie secondaire au lithium
WO2013147537A1 (fr) Procédé de préparation de précurseur de matériau actif de cathode pour une batterie secondaire au lithium, précurseur de matériau actif de cathode pour batterie secondaire au lithium préparé par celui-ci et matériau actif de cathode pour batterie secondaire au lithium le contenant
WO2012093798A2 (fr) Matière active d'anode à gradient de concentration dans la particule totale pour batterie secondaire au lithium, son procédé de préparation, et batterie secondaire au lithium comprenant cette matière
WO2016021791A1 (fr) Matériau actif d'électrode positive pour batterie rechargeable au lithium et batterie rechargeable au lithium le comprenant
WO2014193203A1 (fr) Matériau actif d'anode pour pile au lithium et son procédé de fabrication
WO2013002457A1 (fr) Matière active d'électrode positive, électrode incluant la matière active d'électrode positive et batterie électrochimique au lithium
WO2013115446A1 (fr) Réacteur de préparation d'un précurseur d'un oxyde de métal de transition composite au lithium, et procédé de préparation du précurseur
WO2014010970A1 (fr) Matière active d'anode à densité élevée et son procédé de préparation
WO2014077662A1 (fr) Procédé permettant de produire un précurseur de matière active d'anode pour batterie secondaire au sodium en utilisant une technique de coprécipitation et précurseur de matière active d'anode pour batterie secondaire au sodium produite ainsi
WO2014077663A1 (fr) Matériau actif d'anode pour pile secondaire au sodium et son procédé de fabrication
WO2021025370A1 (fr) Materiau actif cathodique pour batterie de secours au lithium
WO2014104811A1 (fr) Procédé de fabrication de matériau actif de cathode pour batterie secondaire au lithium, et matériau actif de cathode pour batterie secondaire au lithium produit ainsi
WO2015099233A1 (fr) Matériau actif d'anode, batterie secondaire comprenant ledit matériau et procédé de fabrication du matériau actif d'anode
WO2016108385A1 (fr) Précurseur de matériau actif de cathode pour des piles secondaires au lithium, procédé pour le préparer, matériau actif de cathode pour piles secondaires au lithium, procédé pour les préparer, et pile secondaire au lithium comprenant ledit matériau actif de cathode
WO2016108375A1 (fr) Procédé de production de précurseur de matériau actif positif et de matériau actif positif pour batteries secondaires au lithium présentant un gradient de concentration, et précurseur de matériau actif positif et matériau actif positif pour batteries secondaires au lithium présentant un gradient de concentration produits selon ce dernier
WO2021075942A1 (fr) Matériau actif d'électrode positive pour batterie secondaire au lithium, son procédé de préparation, et batterie secondaire au lithium le comprenant
WO2022149675A1 (fr) Précurseur de matériau actif d'électrode positive pour batterie secondaire au lithium et son procédé de fabrication
WO2022014858A1 (fr) Matériau actif d'électrode positive pour batterie secondaire au lithium
WO2015102200A1 (fr) Phosphate de métal de transition et de lithium, son procédé de production, et batterie rechargeable au lithium produite en faisant appel à celui-ci
WO2022065935A1 (fr) Procédé de synthèse à l'état solide d'une particule unique de matériau actif de cathode d'oxyde de métal de transition composite de lithium riche en ni, particule unique de matériau actif de cathode d'oxyde de métal de transition composite de lithium riche en ni, ainsi synthétisée, ainsi que cathode et batterie rechargeable au lithium contenant chacune cette particule
WO2013065918A1 (fr) Procédé de fabrication d'un matériau actif de cathode pour batterie secondaire au lithium
WO2013002559A2 (fr) Matériau actif de cathode, batterie secondaire au lithium contenant le matériau actif de cathode et procédé d'activation électrochimique d'une batterie secondaire au lithium
WO2020256358A1 (fr) Matériau actif d'électrode positive pour batterie secondaire au lithium

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13868086

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14652684

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2013868086

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE